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			article,aside,canvas,datalist,footer,header,hgroup,nav,main{
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	<body>
		<section>
			强调分块
		</section>
		<article>
			强调独立完整的内容
		</article>
		<aside>附属信息，侧边栏，广告</aside>
		<nav>
			<a href="#"></a>
			<a href="#"></a>
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		<header>头部</header>
		<footer>尾部</footer>
		<figure>
			<figcaption></figcaption>
			<img src="../CSS/img/a0.jpg" />
		</figure>
		<hgroup>
			<h3></h3>
			<h3></h3>
			<h3></h3>
		</hgroup>
		<main>主要内容</main>
	</body>
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